Carbon Dioxide

A tractor trailer from Anheuser-Busch’s St. Louis brewery will be hard to miss.

The trucks have gone green, both literally and figuratively.

The beer giant announced Tuesday that it’s converted 97 diesel tractor trucks to compressed natural gas. To highlight the change, all of the trucks now sport a bright green exterior and Anheuser-Busch’s “Seed to Sip” logo.

The U.S. Environmental Protection Agency has proposed the first-ever rules to cut carbon dioxide emissions from existing power plants. The proposal sparked immediate debate over the impact, especially in states such as Missouri that depend heavily on coal.

The new regulations would reduce carbon pollution from the power sector by 30 percent nationwide by 2030, compared to 2005 emissions levels.